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Finding the Fourth Proportional to 519,990.40, 779,985.60 and 183,411.10

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Solution

The fourth proportional to 519,990.40, 779,985.60 and 183,411.10 is: 275,116.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,990.40 : 779,985.60 = 183,411.10 : x
  2. Step 2: Convert to fraction form
    519,990.40/779,985.60 = 183,411.10/x
  3. Step 3: Cross multiply
    519,990.40x = 779,985.60 × 183,411.10
  4. Step 4: Simplify right side
    519,990.40x = 143,058,016,880.16
  5. Step 5: Solve for x
    x = 143,058,016,880.16/519,990.40
  6. Step 6: Final answer
    x = 275,116.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.